A comparative study of electrochemical and optical properties of rhenium deposition on gold and platinum.

MARTINS MARÍA ELISA; CF ZINOLA,; CASTRO LUNA, AM; E MÉNDEZ,; JO ZERBINO,

JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY

SOCIEDADE BRASILEIRA DE QUÍMICA

Lugar: Brasil; Año: 2002 vol. 13 p. 510 - 510

0103-5053

Rhenium-containing films were grown on gold and platinum after different potentiostatic and potentiodynamic polarizations in the - 0.20 V to 0.70 V range (vs rhe) in aqueous acid perrhenate. Experimental data were obtained using cyclic voltammetry and ellipsometry, from which the thickness and optical indices of the electrodeposited rhenium layer were calculated. Metallic rhenium deposition on gold takes place at potentials within the hydrogen evolution reaction. Rhenium oxide on platinum is formed in the hydrogen adatom potential domain, whereas metallic rhenium is deposited concurrently with the hydrogen adsorption and evolution reactions on the same metal.   Keywords: rhenium, gold, platinum, voltammetry, ellipsometry.